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Sugar Maple Yellow Fungus and Black Leaves: Disease Overview

Sugar maple covered in yellow fungus; leaves turning black or with black holes. Owner asks if tree can be saved.

Common Sugar Maple Diseases

Anthracnose (Gloeosporium): necrotic leaf spots turning brown/purple/black. Tar spot (Rhytisma): black dots merging into thick black areas. Root rots (Rhizoctonia, Sclerotium) affect young trees.

Proposed Treatment

Expert recommends "Atomic Grow" (organic, raises plant brix/sugar) plus slow-release fertilizer. Claims this combination restores health, repels pests/fungus. Note: This is a product endorsement; university extensions typically recommend cultural practices and registered fungicides.

Plant Diseases: Japanese Maple Scale Infestation: Simple WD-40 and Oil Treatment; Identifying Lichen vs. Disease on Maple Trunks and Managing Frost Cracks; Sugar Maple White Spots: Harmless Lichens, Real Issue Likely Planting or Herbicide; Black Spots on Sugar Maple Trunk: Borers or Bleeding Canker?; Black Spots on Japanese Maple Bark: Likely Harmless Lichens; Black Spots on Maple Leaves: Tar Spot Fungus—Rake Leaves, Reduce Inoculum, Tree Usually Fine; Black Knot Disease on Plum: Pruning and Fungicide Protocol; Sugar Maple with Black Trunk and Holes: Sapsucker Activity; Maple Trunk Bark Peeling: Wound Care (Bark Scoring); Black Trunk on Young Sugar Maple: Normal Bark Maturation

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